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I was just being cautious since I haven't done it and wanted to hear from others with experience..

I guess what I would be concerned with is that although the others are correct with the locations of the BB Colony... What is the amount of exposure time of Chloramine and Chlorines and even fluoride that BB needs to be in contact with before it's starts to Died off.

If you are not diluting the New Water in with tank water, even though you are adding a water treatment to neutralize the chlorine and chloramine, would this cause a mass die off of BB overall?

Me Myself, I probably wouldn't do something like that just to stay on the safe side of the spectrum. I would Definitely keep and eye the Ammonia and Nitrite levels over the next few days to a week. I would probably also take some aged filter media from one of your other tanks and just shake it out Clean into the take that you did the 100% water change on... This will boost the BB colony just in case.

The Bottom line is that you're Better safe than Sorry! You have some Beautiful Fish man. Would be sad to see you loose any to a simple of a mistake as this one.

Another good practice in a situation like this is to mix up the substrate as you start to drain the tank. This will bring large particles of Detritus into the water Column and mostly be sucked out into the drain hose.

I have found that anything on the bottom other than sand will trap detritus. I use the python tube and just suck up the area around rocks and plants. I would not try and vacuum up too much of the sand with the large water changes, but I would make sure that the prefilter is clean, as that is the easiest and quickest way to get the bulk of the mess out of the tank.

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90 gallon acrylic, wet/dry with a carbon reactor and 406, led lighting with 7 Ikola,13 Maswa, 2-7 stripe fronts,and a royal place

What I did was drain half of the tank water and then started pouring new water. Added safe every 5-10min. Petros were active and eating before I left for work. I will check parameters when I get off work and give an update.

What I did was drain half of the tank water and then started pouring new water. Added safe every 5-10min. Petros were active and eating before I left for work. I will check parameters when I get off work and give an update.

Should I get seachem stability just to be safe?

I think that was probbly the best bet. Nothing wrong with being precautious.

What I did was drain half of the tank water and then started pouring new water. Added safe every 5-10min. Petros were active and eating before I left for work. I will check parameters when I get off work and give an update.